Medically reviewed by Femi Aremu, PharmD Vitamin D3 (cholecalciferol) is a form of vitamin D naturally found in some foods ...

Discover how vitamin D3 influences everything from bone strength to mood. Learn the top 7 natural sources and how to ...

Taking a vitamin D supplement – or getting enough of the compound naturally – can knock three years off your biological aging ...

A large trial shows that the vitamin may delay one biological mechanism linked to aging, but don’t rush out to buy ...

While you can take certain supplements any time of the day, others need a little more careful planning. As a vitamin most ...

A randomized trial suggests vitamin D can protect against telomere shortening, which is linked to risk of age-related disease.

A 21-year-old man or women exposed to summer UVB light generates 10,000 IU (the equivalent of 250 mcg, 25 multivitamin pills of vitamin D, or 100 glasses of milk) of vitamin D in 15 to 20 minutes.

Results from the VITAL randomized controlled trial reveal that vitamin D supplementation helps maintain telomeres, protective caps at the ends of chromosomes that shorten during aging and are linked ...

Vitamin D3, a form of vitamin D, promotes strong bones, good immune health, and mental well-being. You can get vitamin D3 from fortified foods, eggs, and fatty fish — or by spending time in the sun.